Experimental Study on Waste Construction Slurry Treated with Rib-Prefabricated Horizontal Drains by Vacuum Preloading Methods

CAI Ying; ZHONG Yingxin; ZENG Fangjin; CAO Yu; ZHANG Shixiang; LI Jiaobing; XIE Zhongwu; FU Hongtao; YE Shuxiang; LI Shufang

doi:10.3724/j.gyjzG22120208

Volume 54 Issue 12

Dec. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(12): 221-228

CAI Ying, ZHONG Yingxin, ZENG Fangjin, CAO Yu, ZHANG Shixiang, LI Jiaobing, XIE Zhongwu, FU Hongtao, YE Shuxiang, LI Shufang. Experimental Study on Waste Construction Slurry Treated with Rib-Prefabricated Horizontal Drains by Vacuum Preloading Methods[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(12): 221-228. doi: 10.3724/j.gyjzG22120208

Citation:

CAI Ying, ZHONG Yingxin, ZENG Fangjin, CAO Yu, ZHANG Shixiang, LI Jiaobing, XIE Zhongwu, FU Hongtao, YE Shuxiang, LI Shufang. Experimental Study on Waste Construction Slurry Treated with Rib-Prefabricated Horizontal Drains by Vacuum Preloading Methods[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(12): 221-228. doi: 10.3724/j.gyjzG22120208

Citation:

CAI Ying, ZHONG Yingxin, ZENG Fangjin, CAO Yu, ZHANG Shixiang, LI Jiaobing, XIE Zhongwu, FU Hongtao, YE Shuxiang, LI Shufang. Experimental Study on Waste Construction Slurry Treated with Rib-Prefabricated Horizontal Drains by Vacuum Preloading Methods[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(12): 221-228. doi: 10.3724/j.gyjzG22120208

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Experimental Study on Waste Construction Slurry Treated with Rib-Prefabricated Horizontal Drains by Vacuum Preloading Methods

doi: 10.3724/j.gyjzG22120208

1. School of Civil Engineering and Architecture, Wenzhou University, Wenzhou 325035, China;
2. School of Civil Engineering and Surveying and Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341411, China;
3. China Railway 16th Bureau Group Co., Ltd., Beijing 100018, China;
4. Wenzhou Education Infrastructure Center, Wenzhou 325000, China

Received Date: 2022-12-02
Available Online: 2025-01-04
Publish Date: 2024-12-20

Abstract

Abstract

The traditional vacuum preloading method used to treat waste construction slurry. As there were some problems involving clogging and deformation of drain boards and vacuum attenuation in the traditional vacuum preloading treatment, a method of vacuum preloading with Rib-prefabricated horizontal drains (RPHD) was proposed to treat waste construction slurry. Five groups of indoor vacuum preloading model tests were performed to measure the pore water pressure, water discharge, vacuum degree and surface settlement of soil specimens during the reinforcement processes. Simultaneously, the filter membranes of drainage boards were scanned with electron microscopes to analyze the effect of rib width ratios of RPHD on consolidation of waste construction slurry. The test results indicated that RPHD could improve the vacuum transfer efficiency and weaken the clogging of filter membranes of drainage boards during consolidation of waste construction slurry by the vacuum preloading method. A rib width ratio of 0.5 for ribbed drainage boards achieved the optimal performance of water discharge. The mean moisture content and the vane shear strength of treated soil specimens were respectively 38.51% and 32.38 kPa after reinforcement, which effectively improved the strength of reinforced soil. Analyzing the microstructure of filter membranes of drainage boards, it was found that the rib width ratio directly related the clogging of the ribbed drainage boards in the same width of drainage boards, and rib width ratio of 0.5 could fully play the drainage performance of RPHD.
- vacuum preloading,
- rib-prefabricated horizontal drain,
- rib-width ratio,
- waste construction slurry,
- clogging effect

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References(28)

References

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